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Well your thinking is wrong. check the 1996 FSM on the speedo sensor and gauge, and check the wiring diagrams for the tach. It proves the PCM controls it...
Well your thinking is wrong. check the 1996 FSM on the speedo sensor and gauge, and check the wiring diagrams for the tach. It proves the PCM controls it...
the pcm also controls your coil. it could send your tach the exact same signal it sends your coil at the exact same time